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Testing the Installation — Turn on Water and Check for Leaks

Beginner

Part of project

How to Replace a Two-Handle Bathroom Faucet · Step 10 of 10

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In this video

Slowly turn the water back on at both the hot and cold shut-off valves. Carefully inspect all connection points—at the base of the faucet and at the shut-off valves—for any signs of leaks. Use a flashlight and a dry paper towel to help spot drips. Once you've confirmed there are no leaks, turn the faucet handle to test both hot and cold water flow and check that the faucet operates smoothly.

Goal: Check for leaks

Used in this video

  • Flashlight · optionalTo get a clear view of the plumbing connections under the sink.
  • Paper TowelsTo wipe connections and easily detect small drips.
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FAQs

How long should a beginner expect to spend replacing a two-handle bathroom faucet and drain?

For a beginner, this project typically takes 2-4 hours, assuming no major complications like seized nuts. The difficulty is rated as 'beginner' because it involves straightforward steps, but patience is key, especially when working in tight under-sink spaces.

Are there any essential tools I might not already have that are crucial for this faucet replacement?

Yes, a basin wrench (like the Husky 1-1/2 in. Quick-Release Telescoping Basin Wrench) is invaluable for reaching and loosening nuts in tight spaces under the sink. You'll also want a quality adjustable wrench, tongue and groove pliers (Channellock 442), and a reliable flashlight (Panther Vision FLATEYE F-310) for visibility.

What are the critical preparation steps and safety precautions before I start disconnecting anything?

Always begin by shutting off both the hot and cold water supply valves under the sink, then turn on the old faucet to relieve pressure and drain residual water. Have a bucket (Unger 6 Gal. Heavy-Duty Plastic Bucket) and a rag (Better Trends Hugo Collection Bath Rug) ready to catch any spills and protect your cabinetry.

What are the most common reasons for leaks after installing a new faucet or drain, and how can I prevent them?

Leaks often occur from loose supply line connections or improper sealing of the drain assembly. Ensure all connections are hand-tightened, then given an additional quarter to half turn with a wrench. For the drain, properly apply plumber's putty (Oatey 14 oz. Plumber's Putty) around the flange before seating it.

Testing the Installation — How to Replace a Two-Handle Bathroom Faucet (Step 10, Video 2) | Stesso